Home / 3,421.90-5,130.39-2,102.93

Finding the Fourth Proportional to 3,421.90, 5,130.39 and 2,102.93

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Solution

The fourth proportional to 3,421.90, 5,130.39 and 2,102.93 is: 3,152.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.90 : 5,130.39 = 2,102.93 : x
  2. Step 2: Convert to fraction form
    3,421.90/5,130.39 = 2,102.93/x
  3. Step 3: Cross multiply
    3,421.90x = 5,130.39 × 2,102.93
  4. Step 4: Simplify right side
    3,421.90x = 10,788,864.68
  5. Step 5: Solve for x
    x = 10,788,864.68/3,421.90
  6. Step 6: Final answer
    x = 3,152.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.